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Bob's Knobs Astro Tech AT6RC & AT8RC Collimation Knobs - Secondary Mirror - AT8RC

SKU: BOB-AT8RC

Bob's Knobs Astro Tech AT6RC & AT8RC Collimation Knobs - Secondary Mirror

Bob's Knobs Astro Tech AT6RC & AT8RC Collimation knobs fit Astro Tech AT8RC & AT6RC secondary. The knobs are made from a black plastic that is 16 mm (5/8") in diameter. The threads are stainless steel.

With Bob's Knobs installed your factory dust cover will fit normally. However, among manufacturing variations in secondary mirror heights, some knobs may stand too high for the dust cover to fully seat. Contact Bob's Knobs for more info on obtaining a set of knobs with shorter screws.